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Merge pull request #7429 from matrix-org/rav/upsert_for_device_list 

use an upsert to update device_lists_outbound_last_success
This commit is contained in:
Richard van der Hoff 2020-05-06 11:53:18 +01:00 committed by GitHub
parent 16b1a34e80 30a19daa02
commit 79007a42b2
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 115 additions and 48 deletions
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1
changelog.d/7429.misc Normal file
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@ -0,0 +1 @@
Improve performance of `mark_as_sent_devices_by_remote`.

60
synapse/storage/data_stores/main/devices.py
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@ -55,6 +55,10 @@ DROP_DEVICE_LIST_STREAMS_NON_UNIQUE_INDEXES = (
BG_UPDATE_REMOVE_DUP_OUTBOUND_POKES = "remove_dup_outbound_pokes"
BG_UPDATE_DROP_DEVICE_LISTS_OUTBOUND_LAST_SUCCESS_NON_UNIQUE_IDX = (
"drop_device_lists_outbound_last_success_non_unique_idx"
)
class DeviceWorkerStore(SQLBaseStore):
def get_device(self, user_id, device_id):
@ -342,32 +346,23 @@ class DeviceWorkerStore(SQLBaseStore):
def _mark_as_sent_devices_by_remote_txn(self, txn, destination, stream_id):
# We update the device_lists_outbound_last_success with the successfully
# poked users. We do the join to see which users need to be inserted and
# which updated.
# poked users.
sql = """
SELECT user_id, coalesce(max(o.stream_id), 0), (max(s.stream_id) IS NOT NULL)
SELECT user_id, coalesce(max(o.stream_id), 0)
FROM device_lists_outbound_pokes as o
LEFT JOIN device_lists_outbound_last_success as s
USING (destination, user_id)
WHERE destination = ? AND o.stream_id <= ?
GROUP BY user_id
"""
txn.execute(sql, (destination, stream_id))
rows = txn.fetchall()
sql = """
UPDATE device_lists_outbound_last_success
SET stream_id = ?
WHERE destination = ? AND user_id = ?
"""
txn.executemany(sql, ((row[1], destination, row[0]) for row in rows if row[2]))
sql = """
INSERT INTO device_lists_outbound_last_success
(destination, user_id, stream_id) VALUES (?, ?, ?)
"""
txn.executemany(
sql, ((destination, row[0], row[1]) for row in rows if not row[2])
self.db.simple_upsert_many_txn(
txn=txn,
table="device_lists_outbound_last_success",
key_names=("destination", "user_id"),
key_values=((destination, user_id) for user_id, _ in rows),
value_names=("stream_id",),
value_values=((stream_id,) for _, stream_id in rows),
)
# Delete all sent outbound pokes
@ -725,6 +720,21 @@ class DeviceBackgroundUpdateStore(SQLBaseStore):
BG_UPDATE_REMOVE_DUP_OUTBOUND_POKES, self._remove_duplicate_outbound_pokes,
)
# create a unique index on device_lists_outbound_last_success
self.db.updates.register_background_index_update(
"device_lists_outbound_last_success_unique_idx",
index_name="device_lists_outbound_last_success_unique_idx",
table="device_lists_outbound_last_success",
columns=["destination", "user_id"],
unique=True,
)
# once that completes, we can remove the old non-unique index.
self.db.updates.register_background_update_handler(
BG_UPDATE_DROP_DEVICE_LISTS_OUTBOUND_LAST_SUCCESS_NON_UNIQUE_IDX,
self._drop_device_lists_outbound_last_success_non_unique_idx,
)
@defer.inlineCallbacks
def _drop_device_list_streams_non_unique_indexes(self, progress, batch_size):
def f(conn):
@ -799,6 +809,20 @@ class DeviceBackgroundUpdateStore(SQLBaseStore):
return rows
async def _drop_device_lists_outbound_last_success_non_unique_idx(
self, progress, batch_size
):
def f(txn):
txn.execute("DROP INDEX IF EXISTS device_lists_outbound_last_success_idx")
await self.db.runInteraction(
"drop_device_lists_outbound_last_success_non_unique_idx", f,
)
await self.db.updates._end_background_update(
BG_UPDATE_DROP_DEVICE_LISTS_OUTBOUND_LAST_SUCCESS_NON_UNIQUE_IDX
)
return 1
class DeviceStore(DeviceWorkerStore, DeviceBackgroundUpdateStore):
def __init__(self, database: Database, db_conn, hs):

28
synapse/storage/data_stores/main/schema/delta/58/04device_lists_outbound_last_success_unique_idx.sql Normal file
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@ -0,0 +1,28 @@
/* Copyright 2020 The Matrix.org Foundation C.I.C
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-- register a background update which will create a unique index on
-- device_lists_outbound_last_success
INSERT into background_updates (ordering, update_name, progress_json)
VALUES (5804, 'device_lists_outbound_last_success_unique_idx', '{}');
-- once that completes, we can drop the old index.
INSERT into background_updates (ordering, update_name, progress_json, depends_on)
VALUES (
5804,
'drop_device_lists_outbound_last_success_non_unique_idx',
'{}',
'device_lists_outbound_last_success_unique_idx'
);

74
synapse/storage/database.py
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@ -49,6 +49,7 @@ from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.storage.background_updates import BackgroundUpdater
from synapse.storage.engines import BaseDatabaseEngine, PostgresEngine, Sqlite3Engine
from synapse.storage.types import Connection, Cursor
from synapse.types import Collection
from synapse.util.stringutils import exception_to_unicode
logger = logging.getLogger(__name__)
@ -78,6 +79,7 @@ UNIQUE_INDEX_BACKGROUND_UPDATES = {
"device_lists_remote_extremeties": "device_lists_remote_extremeties_unique_idx",
"device_lists_remote_cache": "device_lists_remote_cache_unique_idx",
"event_search": "event_search_event_id_idx",
"device_lists_outbound_last_success": "device_lists_outbound_last_success_unique_idx",
}
@ -889,20 +891,24 @@ class Database(object):
txn.execute(sql, list(allvalues.values()))
def simple_upsert_many_txn(
self, txn, table, key_names, key_values, value_names, value_values
):
self,
txn: LoggingTransaction,
table: str,
key_names: Collection[str],
key_values: Collection[Iterable[Any]],
value_names: Collection[str],
value_values: Iterable[Iterable[str]],
) -> None:
"""
Upsert, many times.
Args:
table (str): The table to upsert into
key_names (list[str]): The key column names.
key_values (list[list]): A list of each row's key column values.
value_names (list[str]): The value column names. If empty, no
values will be used, even if value_values is provided.
value_values (list[list]): A list of each row's value column values.
Returns:
None
table: The table to upsert into
key_names: The key column names.
key_values: A list of each row's key column values.
value_names: The value column names
value_values: A list of each row's value column values.
Ignored if value_names is empty.
"""
if self.engine.can_native_upsert and table not in self._unsafe_to_upsert_tables:
return self.simple_upsert_many_txn_native_upsert(
@ -914,20 +920,24 @@ class Database(object):
)
def simple_upsert_many_txn_emulated(
self, txn, table, key_names, key_values, value_names, value_values
):
self,
txn: LoggingTransaction,
table: str,
key_names: Iterable[str],
key_values: Collection[Iterable[Any]],
value_names: Collection[str],
value_values: Iterable[Iterable[str]],
) -> None:
"""
Upsert, many times, but without native UPSERT support or batching.
Args:
table (str): The table to upsert into
key_names (list[str]): The key column names.
key_values (list[list]): A list of each row's key column values.
value_names (list[str]): The value column names. If empty, no
values will be used, even if value_values is provided.
value_values (list[list]): A list of each row's value column values.
Returns:
None
table: The table to upsert into
key_names: The key column names.
key_values: A list of each row's key column values.
value_names: The value column names
value_values: A list of each row's value column values.
Ignored if value_names is empty.
"""
# No value columns, therefore make a blank list so that the following
# zip() works correctly.
@ -941,20 +951,24 @@ class Database(object):
self.simple_upsert_txn_emulated(txn, table, _keys, _vals)
def simple_upsert_many_txn_native_upsert(
self, txn, table, key_names, key_values, value_names, value_values
):
self,
txn: LoggingTransaction,
table: str,
key_names: Collection[str],
key_values: Collection[Iterable[Any]],
value_names: Collection[str],
value_values: Iterable[Iterable[Any]],
) -> None:
"""
Upsert, many times, using batching where possible.
Args:
table (str): The table to upsert into
key_names (list[str]): The key column names.
key_values (list[list]): A list of each row's key column values.
value_names (list[str]): The value column names. If empty, no
values will be used, even if value_values is provided.
value_values (list[list]): A list of each row's value column values.
Returns:
None
table: The table to upsert into
key_names: The key column names.
key_values: A list of each row's key column values.
value_names: The value column names
value_values: A list of each row's value column values.
Ignored if value_names is empty.
"""
allnames = [] # type: List[str]
allnames.extend(key_names)